Example usage for org.apache.commons.configuration HierarchicalConfiguration HierarchicalConfiguration

Introduction

In this page you can find the example usage for org.apache.commons.configuration HierarchicalConfiguration HierarchicalConfiguration.

Prototype

public HierarchicalConfiguration()

Source Link

Document

Creates a new instance of HierarchicalConfiguration.

Usage

From source file:org.lable.oss.dynamicconfig.core.ConfigurationInitializer.java

/**
 * Use system properties to initialize a configuration instance.
 *
 * @param defaults     Default configuration. Any keys not overridden by the dynamic configuration will remain as
 *                     set here./*from ww  w. ja  va  2  s .c om*/
 * @param deserializer Deserializer used to interpret the language the configuration file is written in.
 * @return Thread-safe configuration instance.
 * @throws ConfigurationException Thrown when the required system properties are not set.
 */
public static Configuration configureFromProperties(HierarchicalConfiguration defaults,
        HierarchicalConfigurationDeserializer deserializer) throws ConfigurationException {
    String desiredSourceName = System.getProperty(LIBRARY_PREFIX + ".type");
    if (desiredSourceName == null) {
        throw new ConfigurationException("System property " + LIBRARY_PREFIX + ".type is not set.");
    }

    List<ConfigurationSource> sources = detectConfigurationSourceServiceProviders();
    ConfigurationSource desiredSource = null;
    for (ConfigurationSource source : sources) {
        if (source.name().equals(desiredSourceName)) {
            desiredSource = source;
            break;
        }
    }

    if (desiredSource == null) {
        throw new ConfigurationException("Could not find a ConfigurationSource with name " + desiredSourceName);
    }

    Configuration sourceConfiguration = gatherPropertiesFor(desiredSource);
    desiredSource.configure(sourceConfiguration);

    // Create the configuration object with its defaults loaded last. The combiner expects them in that order.
    final CombinedConfiguration allConfig = new CombinedConfiguration(new OverrideCombiner());
    final ConcurrentConfiguration concurrentConfiguration = new ConcurrentConfiguration(allConfig,
            desiredSource);

    // Add an empty named placeholder for the runtime configuration that will be loaded later on.
    allConfig.addConfiguration(new HierarchicalConfiguration(), "runtime");
    if (defaults != null) {
        allConfig.addConfiguration(defaults, "defaults");
    }

    // Listens to changes in the configuration source and updates the configuration tree.
    ConfigChangeListener listener = fresh -> {
        logger.info("New runtime configuration received.");
        concurrentConfiguration.updateConfiguration("runtime", fresh);
    };

    desiredSource.load(deserializer, listener);

    // Listen for future changes in the run-time configuration.
    desiredSource.listen(deserializer, listener);

    return concurrentConfiguration;
}

From source file:org.lable.oss.dynamicconfig.core.DependencyInjectionIT.java

@Test
public void diProviderTestWithDefaults() {
    System.setProperty(ConfigurationInitializer.LIBRARY_PREFIX + ".type", "classpath");
    System.setProperty(ConfigurationInitializer.LIBRARY_PREFIX + ".classpath.path", "test.yml");
    final HierarchicalConfiguration defaults = new HierarchicalConfiguration();
    defaults.setProperty("type.string", "Not okay");
    defaults.setProperty("only.in.defaults", "XXX");

    Injector injector = Guice.createInjector(new AbstractModule() {
        @Override//from  w  w w  .  j  av  a2  s .c o m
        protected void configure() {
            bind(HierarchicalConfiguration.class).annotatedWith(ConfigurationDefaults.class)
                    .toInstance(defaults);
            bind(HierarchicalConfigurationDeserializer.class).to(YamlDeserializer.class);
            bind(Configuration.class).toProvider(ConfigurationProvider.class);
        }
    });

    Configuration configuration = injector.getInstance(Configuration.class);

    // As set in test.yml:
    assertThat(configuration.getString("type.string"), is("Okay"));
    // Overridden in this test:
    assertThat(configuration.getString("only.in.defaults"), is("XXX"));
}

From source file:org.lable.oss.dynamicconfig.core.DependencyInjectionIT.java

@Test
public void diModuleTestWithDefaults() {
    System.setProperty(ConfigurationInitializer.LIBRARY_PREFIX + ".type", "classpath");
    System.setProperty(ConfigurationInitializer.LIBRARY_PREFIX + ".classpath.path", "test.yml");
    final HierarchicalConfiguration defaults = new HierarchicalConfiguration();
    defaults.setProperty("type.string", "Not okay");
    defaults.setProperty("only.in.defaults", "XXX");

    final Injector injector = Guice.createInjector(new AbstractModule() {
        @Override//www .  java2s. c  o m
        protected void configure() {
            install(new DynamicConfigModule());
            bind(HierarchicalConfiguration.class).annotatedWith(ConfigurationDefaults.class)
                    .toInstance(defaults);
        }
    });

    Configuration configuration = injector.getInstance(Configuration.class);

    // As set in test.yml:
    assertThat(configuration.getString("type.string"), is("Okay"));
    // Overridden in this test:
    assertThat(configuration.getString("only.in.defaults"), is("XXX"));
}

From source file:org.lable.oss.dynamicconfig.provider.zookeeper.ZookeepersAsConfigSourceIT.java

@Test
public void configurationMonitorTest() throws Exception {
    setData("\n");

    System.setProperty(LIBRARY_PREFIX + ".type", "zookeeper");
    System.setProperty(LIBRARY_PREFIX + ".zookeeper.znode", "/config");
    System.setProperty(LIBRARY_PREFIX + ".zookeeper.quorum", zookeeperHost);
    System.setProperty(LIBRARY_PREFIX + "." + APPNAME_PROPERTY, "test");
    HierarchicalConfiguration defaults = new HierarchicalConfiguration();
    defaults.setProperty("key", "DEFAULT");

    Configuration configuration = ConfigurationInitializer.configureFromProperties(defaults,
            new YamlDeserializer());

    final AtomicInteger count = new AtomicInteger(0);
    Precomputed<String> precomputed = Precomputed.monitorByUpdate(configuration, config -> {
        count.incrementAndGet();/*  w w w . ja v  a2s  .  c  o m*/
        return config.getString("key");
    });

    assertThat(precomputed.get(), is("DEFAULT"));
    assertThat(count.get(), is(1));
    assertThat(configuration.getString("key"), is("DEFAULT"));

    TimeUnit.MILLISECONDS.sleep(300);

    assertThat(precomputed.get(), is("DEFAULT"));
    assertThat(count.get(), is(1));

    setData("key: AAA");
    TimeUnit.MILLISECONDS.sleep(300);

    assertThat(count.get(), is(1));
    assertThat(configuration.getString("key"), is("AAA"));
    assertThat(precomputed.get(), is("AAA"));
    assertThat(count.get(), is(2));
    assertThat(precomputed.get(), is("AAA"));
    assertThat(count.get(), is(2));
}

From source file:org.lable.oss.dynamicconfig.provider.zookeeper.ZookeepersAsConfigSourceIT.java

@Test
public void viaInitializerTest() throws Exception {
    setData("\n");

    System.setProperty(LIBRARY_PREFIX + ".type", "zookeeper");
    System.setProperty(LIBRARY_PREFIX + ".zookeeper.znode", "/config");
    System.setProperty(LIBRARY_PREFIX + ".zookeeper.quorum", zookeeperHost);
    System.setProperty(LIBRARY_PREFIX + "." + APPNAME_PROPERTY, "test");
    HierarchicalConfiguration defaults = new HierarchicalConfiguration();
    defaults.setProperty("key", "DEFAULT");

    Configuration configuration = ConfigurationInitializer.configureFromProperties(defaults,
            new YamlDeserializer());

    assertThat(configuration.getString("key"), is("DEFAULT"));

    setData("key: AAA");
    TimeUnit.MILLISECONDS.sleep(300);

    assertThat(configuration.getString("key"), is("AAA"));
}

From source file:org.lable.oss.dynamicconfig.serialization.yaml.JsonSerializerTest.java

@Test
public void testSave() throws ConfigurationException, IOException {
    HierarchicalConfigurationSerializer serializer = new JsonSerializer();
    HierarchicalConfiguration configuration = new HierarchicalConfiguration();
    configuration.setProperty("type.unicodeString", "");
    configuration.setProperty("type.booleanFalse", false);
    configuration.setProperty("type.booleanTrue", true);
    configuration.setProperty("type.list", Arrays.asList("1", "2", "3"));

    ByteArrayOutputStream output = new ByteArrayOutputStream();
    serializer.serialize(configuration, output);
    String json = IOUtils.toString(new StringReader(output.toString("UTF-8")));
    JsonNode tree = mapper.readTree(json);

    JsonNode nodeType = tree.get("type");
    assertThat(nodeType.get("unicodeString").textValue(), is(""));
    assertThat(nodeType.get("booleanFalse").booleanValue(), is(false));
    assertThat(nodeType.get("booleanTrue").booleanValue(), is(true));
    ArrayNode listString = (ArrayNode) nodeType.get("list");
    assertThat(listString, instanceOf(ArrayNode.class));
}

From source file:org.lable.oss.dynamicconfig.serialization.yaml.YamlDeserializer.java

/**
 * {@inheritDoc}/*ww  w  .  ja v  a2s  . c om*/
 */
@Override
public HierarchicalConfiguration deserialize(InputStream input) throws ConfigurationException {
    String content;
    try {
        content = IOUtils.toString(input);
    } catch (IOException e) {
        throw new ConfigurationException("Failed to read from stream.");
    }

    if (content.isEmpty()) {
        return new HierarchicalConfiguration();
    }

    Object tree;
    try {
        tree = yaml.load(content);
    } catch (ParserException e) {
        throw new ConfigurationException("Failed to parse input as valid YAML.", e);
    }
    HierarchicalConfiguration configuration = new HierarchicalConfiguration();
    traverseTreeAndLoad(configuration.getRootNode(), tree);
    return configuration;
}

From source file:org.midonet.brain.services.vxgw.BridgeMonitorTest.java

@Before
public void before() throws Exception {
    HierarchicalConfiguration config = new HierarchicalConfiguration();
    BrainTestUtils.fillTestConfig(config);
    Injector injector = Guice.createInjector(BrainTestUtils.modules(config));

    Directory directory = injector.getInstance(Directory.class);
    BrainTestUtils.setupZkTestDirectory(directory);

    this.dataClient = injector.getInstance(DataClient.class);
    this.zkConnWatcher = new ZookeeperConnectionWatcher();

    host = new Host();
    host.setName("TestHost");
    hostId = dataClient.hostsCreate(UUID.randomUUID(), host);

    TunnelZone tz = new TunnelZone();
    tz.setName("TestTz");
    UUID tzId = dataClient.tunnelZonesCreate(tz);
    TunnelZone.HostConfig zoneHost = new TunnelZone.HostConfig(hostId);
    zoneHost.setIp(tunnelZoneHostIp);//from  ww w.  ja  va 2  s. c  o  m
    dataClient.tunnelZonesAddMembership(tzId, zoneHost);

    vtep = new VTEP();
    vtep.setId(vtepMgmtIp);
    vtep.setMgmtPort(vtepMgmntPort);
    vtep.setTunnelZone(tzId);
    dataClient.vtepCreate(vtep);
}

From source file:org.midonet.brain.services.vxgw.HostMonitorTest.java

@Before
public void before() throws Exception {
    HierarchicalConfiguration config = new HierarchicalConfiguration();
    BrainTestUtils.fillTestConfig(config);
    Injector injector = Guice.createInjector(BrainTestUtils.modules(config));

    Directory directory = injector.getInstance(Directory.class);
    BrainTestUtils.setupZkTestDirectory(directory);

    dataClient = injector.getInstance(DataClient.class);
    zkConnWatcher = new ZookeeperConnectionWatcher();
}

From source file:org.midonet.brain.services.vxgw.TunnelZoneMonitorTest.java

@Before
public void before() throws Exception {
    HierarchicalConfiguration config = new HierarchicalConfiguration();
    BrainTestUtils.fillTestConfig(config);
    Injector injector = Guice.createInjector(BrainTestUtils.modules(config));

    Directory directory = injector.getInstance(Directory.class);
    BrainTestUtils.setupZkTestDirectory(directory);

    this.dataClient = injector.getInstance(DataClient.class);
    this.zkConnWatcher = new ZookeeperConnectionWatcher();
}